Bug 787064 - System Message API: add broadcastMessage(). r=fabrice

dom/messages/SystemMessageInternal.js

@@ -41,31 +41,14 @@ function SystemMessageInternal() {
 
 SystemMessageInternal.prototype = {
   sendMessage: function sendMessage(aType, aMessage, aPageURI, aManifestURI) {
-    debug("Broadcasting " + aType + " " + JSON.stringify(aMessage));
-    ppmm.broadcastAsyncMessage("SystemMessageManager:Message" , { type: aType,
-                                                                  msg: aMessage,
-                                                                  manifest: aManifestURI.spec });
+    this._sendMessage(aType, aMessage, aPageURI.spec, aManifestURI.spec);
+  },
 
-    // Queue the message for pages that registered an handler for this type.
-    this._pages.forEach(function sendMess_openPage(aPage) {
-      if (aPage.type != aType ||
-          aPage.manifest != aManifestURI.spec ||
-          aPage.uri != aPageURI.spec) {
-        return;
+  broadcastMessage: function broadcastMessage(aType, aMessage) {
+    this._pages.forEach(function(aPage) {
+      if (aPage.type == aType) {
+        this._sendMessage(aType, aMessage, aPage.uri, aPage.manifest);
       }
-
-      aPage.pending.push(aMessage);
-      if (aPage.pending.length > kMaxPendingMessages) {
-        aPage.pending.splice(0, 1);
-      }
-
-      // We don't need to send the full object to observers.
-      let page = { uri: aPage.uri,
-                   manifest: aPage.manifest,
-                   type: aPage.type,
-                   target: aMessage.target };
-      debug("Asking to open  " + JSON.stringify(page));
-      Services.obs.notifyObservers(this, "system-messages-open-app", JSON.stringify(page));
     }.bind(this))
   },
 
@@ -118,6 +101,35 @@ SystemMessageInternal.prototype = {
     }
   },
 
+  _sendMessage: function _sendMessage(aType, aMessage, aPageURI, aManifestURI) {
+    debug("Broadcasting " + aType + " " + JSON.stringify(aMessage));
+    ppmm.broadcastAsyncMessage("SystemMessageManager:Message" , { type: aType,
+                                                                  msg: aMessage,
+                                                                  manifest: aManifestURI });
+
+    // Queue the message for pages that registered an handler for this type.
+    this._pages.forEach(function sendMess_openPage(aPage) {
+      if (aPage.type != aType ||
+          aPage.manifest != aManifestURI ||
+          aPage.uri != aPageURI) {
+        return;
+      }
+
+      aPage.pending.push(aMessage);
+      if (aPage.pending.length > kMaxPendingMessages) {
+        aPage.pending.splice(0, 1);
+      }
+
+      // We don't need to send the full object to observers.
+      let page = { uri: aPage.uri,
+                   manifest: aPage.manifest,
+                   type: aPage.type,
+                   target: aMessage.target };
+      debug("Asking to open  " + JSON.stringify(page));
+      Services.obs.notifyObservers(this, "system-messages-open-app", JSON.stringify(page));
+    }.bind(this))
+  },
+
   classID: Components.ID("{70589ca5-91ac-4b9e-b839-d6a88167d714}"),
 
   QueryInterface: XPCOMUtils.generateQI([Ci.nsISystemMessagesInternal, Ci.nsIObserver])

dom/messages/interfaces/nsISystemMessagesInternal.idl

@@ -9,7 +9,7 @@ interface nsIDOMWindow;
 
 // Implemented by the contract id @mozilla.org/system-message-internal;1
 
-[scriptable, uuid(3a50fd6b-0263-45c1-b738-a002052ad31b)]
+[scriptable, uuid(d8de761a-94fe-44d5-80eb-3c8bd8cd7d0b)]
 interface nsISystemMessagesInternal : nsISupports
 {
   /*
@@ -21,6 +21,14 @@ interface nsISystemMessagesInternal : nsISupports
    */
   void sendMessage(in DOMString type, in jsval message, in nsIURI pageURI, in nsIURI manifestURI);
 
+  /*
+   * Allow any internal user to broadcast a message of a given type.
+   * The application that registers the message will be launched.
+   * @param type        The type of the message to be sent.
+   * @param message     The message payload.
+   */
+  void broadcastMessage(in DOMString type, in jsval message);
+
   /*
    * Registration of a page that wants to be notified of a message type.
    * @param type          The message type.